Global warming threatens small mammal, lawsuit charges (Lexington Herald-Leader) Compared to the polar bear, the American pika is downright tiny. Weighing only 4 ounces to 6 ounces, this small, rabbitlike mammal with thick brown hair that lives on boulder-covered slopes near alpine meadows in Western mountain ranges, could represent the latest effort to use the Endangered Species Act to combat global warming. Environmentalists filed a lawsuit Tuesday in U.S. district ... [News Source]